Journal of Engineering and Technological Sciences | |
Parameter Estimation for Class A Modeled Ocean Ambient Noise | |
Xuebo Zhang1  Wenwei Ying2  | |
[1] Laboratory of Underwater Acoustics, Middle of Renmin Avenue, Xiashan District, Zhanjiang 524000,;Naval Research Academy, No. 1 of the Old West Road, Changping District, Beijing 102249, | |
关键词: characteristic function; class A; noise modeling; non-Gaussian noise; parameter estimation; quantile-quantile (Q-Q) plot; | |
DOI : 10.5614/j.eng.technol.sci.2018.50.3.2 | |
学科分类:工程和技术(综合) | |
来源: Institute for Research and Community Services ITB | |
【 摘 要 】
A Gaussian distribution is used by all traditional underwater acoustic signal processors, thus neglecting the impulsive property of ocean ambient noise in shallow waters. Undoubtedly, signal processors designed with a Gaussian model are sub-optimal in the presence of non-Gaussian noise. To solve this problem, firstly a quantile-quantile (Q-Q) plot of real data was analyzed, which further showed the necessity of investigating a non-Gaussian noise model. A Middleton Class A noise model considering impulsive noise was used to model non-Gaussian noise in shallow waters. After that, parameter estimation for the Class A model was carried out with the characteristic function. Lastly, the effectiveness of the method proposed in this paper was verified by using simulated data and real data.
【 授权许可】
CC BY
【 预 览 】
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